Question

Waste product produced during respiration in the plant are
a. $CO_2$
b. Water
c. Oxygen
d. Both A and B

Answer 1

Hint: Respiration in plants is the process that involves sugars produced during photosynthesis and oxygen to produce energy for the growth of a plant. Respiration occurs in the mitochondria of the cell and the presence of oxygen. This respiration is known as aerobic respiration. Plants take carbon dioxide and release oxygen.

Complete answer:
- Respiration also occurs in plants all the time as in animals because plant cells require energy to stay alive.
- Respiratory waste products produced by plants are carbon dioxide and water.
- Carbon dioxide released during respiration in green plants is utilized in the process of photosynthesis.
- Photosynthesis in plants occurs only in the presence of light.
- The process of photosynthesis occurs in the chloroplasts of plant cells.
- Oxygen is released by the plants during photosynthesis in the presence of light. During the night the plants uptake oxygen and release carbon dioxide and this process is known as respiration.
- The waste product generated during photosynthesis is oxygen and it exits through root cell walls, stomata, and other routes.
- Plants remove the excess water by transpiration and guttation.
- In the process of respiration, oxygen is utilized and carbon dioxide, water, and energy are released as products.

Hence, the correct answer is option (D).

Additional information:
- Respiration is a catabolic process whereas photosynthesis is an anabolic process.
- In photosynthesis, organic compounds are synthesized (storing energy) and in respiration, utilization of organic compounds occurs (producing energy).
- During respiration exchange of gases in the leaves takes place through the stomata.

Note: The process of respiration is used by all living organisms to get the energy to stay alive. Plants use the process of respiration to convert nutrients obtained from the soil into energy which provides fuel for cellular activities of plants. During the process of respiration, the plants release water and carbon dioxide as waste products. Water is lost in the form of transpiration and guttation. At night plants release carbon dioxide and uptake oxygen.